Chronic caffeine alters the density of adenosine,adrenergic, cholinergic,GABA, and serotonin receptors and calcium channels in mouse brain |
| |
Authors: | Dan Shi Olga Nikodijević Kenneth A Jacobson John W Daly |
| |
Institution: | 1. Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, 20892, Bethesda, MD, USA
|
| |
Abstract: | 1. |
Chronic ingestion of caffeine by male NIH strain mice alters the density of a variety of central receptors.
| 2. |
The density of cortical A1 adenosine receptors is increased by 20%, while the density of striatal A2A adenosine receptors is unaltered.
| 3. |
The densities of cortical
1 and cerebellar
2 adrenergic receptors are reduced byca. 25%, while the densities of cortical
1 and
2 adrenergic receptors are not significantly altered. Densities of striatal D1 and D2 dopaminergic receptors are unaltered. The densities of cortical 5 HT1 and 5 HT2 serotonergic receptors are increased by 26–30%. Densities of cortical muscarinic and nicotinic receptors are increased by 40–50%. The density of cortical benzodiazepine-binding sites associated with GABAA receptors is increased by 65%, and the affinity appears slightly decreased. The density of cortical MK-801 sites associated with NMDA-glutaminergic receptors appear unaltered.
| 4. |
The density of cortical nitrendipine-binding sites associated with calcium channels is increased by 18%.
| 5. |
The results indicate that chronic ingestion of caffeine equivalent to about 100 mg/kg/day in mice causes a wide range of biochemical alterations in the central nervous system.
|
|
| |
Keywords: | caffeine adenosine receptors adrenergic receptors cholinergic receptors serotonin receptors GABA receptors calcium channels dopamine receptors NMDA receptors |
本文献已被 SpringerLink 等数据库收录! |
|